Rear dump vehicle



Oct. 21. 1924.

A. P. LEE ET AL REAR DUMP VEHICLE Filedk Feb. 10. 1922 6 Sheets-Sheet lA. P. LEE ET AL REAR DUMP VEHICLE Oct. 21. |924- Filed Feb. lO i922 6Sheets-Sheet 2 Oct. 21|. 1924. 1,512,227

A. P. LEEli-:T A1.

REAR DUMP VEHICLE Filed Feb. 10, '1922 6 Sheets-Sheet 5 MMM@ a,

A. P. LEE ET AL REAR DUMP VEHICLE Filed Feb. 10, 1922 6 Sheets-Sheet 4/Wagmw frza'efjan .i E B21 We M42 Oct. 21, w24. 1,512,227

A P. LEE ET AL BEAR DUMP VEHICLE fled Feb. l0 l'at?. Sheets-Sheet1,512,227 A. P. LEE ET AL REAR DUMP VEHICLE Filed Feb. l0, 1922 6Sheets-Sheet. fi

Oct. 21, 1924.

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Pnened'oa. 21, 1924. 1,512,227

UNITED. sTATEs PATENT OFFICE.

ALBERT 1. LIJI` AND MAGN'US C. ANDERSON, OF CHICAGO', ILLINOIS,ASSIGNOBVS, BY n DIRECT AND MESNE ASSIGNMENTS, T LEE TRAILER BODYCOMPANY, 0F 'CHL CAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

REAlR-DUMP VEHICLE.

Application lled February 10, 1922. Serial No. 635,451.

T o'aZl lwlwm 'it may concern: which has an upwardly curved portion 'in50 Be it known that we, ALBERT P. LEE and substantially verticalalignment with the MAGNUs C. ANDERSON, citizens of the United springsand associated arts adjacent the States, residing at Chicago, in thecounty of rear'wheels of the vehicle so as to make it Cook and State ofIllinois, have invented a possible to lower the runway as greatly ascertain new and useful Improvement in possible withoutA interfering withthe opera- Rear-Dump Vehicles, of which the followtion of the deviceslocated adjacent the rear ing is a full, clear, concise, and exactdescrip wheels. tion, reference being had to the accompany- It is stilla further object of the invention l0 ing drawings, forming a part ofthis specito provide a rail or rocker on the rolling hopcation.` perwhich cooperates with the rail having 60 Our invention relates to reardump vehiv the upwardly curved or upwardly bowed cles, and moreparticularly to a rear dump portion which is substantially strai ht fromvehicle which has a low center of gravity. end to end thereof, and whichexten s diego 15 I t is a purpose of the invention to provide nallydownward from the hopper, thus proa rear dump vehicle which is adaptedto roll viding an inclined rail on the hopper and from load carrying todischarge position an upwardly curved rail on the vehicle vsubstantially automatically and to return' framework. from dischargetoload carrying position It is another object ofthe invention to 20substantially automatically after being empprovidel a vehicle of theabove mentioned tied, and to provide such a vehicle which character witha hopper having an end gate has a. very low center of gravity both whenthat vmay be opened both at `the upper and empty and when loaded.Ordinarily where lower edge thereof as desired, and which is a hopperisprovided that rolls substantially provided with means for automatically25 automatically from Iload carrying to dum opening the end gate whenthe hopper has ing position the vehicle has a comparative y rolled tothe proper dumping angle relative high center of gravity and accordinglydoes to' the framework. not ride as easily as a vehicle which has a Itis also an object of the invention'to lower center of gravity. A providepivot hooks on the runway so that :'10 lt is a purpose of the p-resentinvention to the hopper may pivot to final dumping posi-y provide a reardumping vehicle of the chartion if it is desired to dump the same at anacter referred to above with a pair of rails angle more nearlyperpendicular to the or rockers which are adapted. to cooperate ground,such a dumping position bein de,y with runways or rails mounted on thevesirablc where a material that isV dilficu t to 35 hicle, the rollingsurfaces of which runways dump, such as wet concrete.l is being hanorrails are located below the upper surface dled. of the vehicleframework. lt is also an object of the invention to prolt is still afurther purpose of the invenvide new and improved means for lookin tionto provide a vehicle of the above menthe hopper in load carryingposition, whic 4o tioned character with a runway for therollautomatically operates to lock the hopper in ing hopper which ismounted on a, supportposition. ing framework having runway sup-portingOther objects and advantages of the inmembers which are depressed belowthe top vention will appear as the description of the` surface of thevehicle framework so as to obaccompanying drawings proceeds. Howtain alow loading edge and a correspondever, we desire to have it distinctlyunderingly low center of gravity for the vehicle stood that we do notintend to limit our- 96 when both loaded and unloaded. selves to theexact details shown or vde- It is also a. purpose of the inventionl toscribed, but that we intend to include as part provide a rail or runwayo'n said framework of our invention all such obvious changes andmodifications of parts as would occur to a person skilled in this art,and as would fall within the Ascope of the claims.

In the drawings:

Fig. 1 is a side elevation ot the rear portion of a'vehicle, such as anautomobile truck i having our improved rolling hopper constructionapplied thereto; i Fig. 2- is a longitudinal sectional View of thestructurefshown in Fig. 1 showing the hopper in dumping position indotted lines, said section being taken substantially on the line 2-2 ofFig. 3;` .v Y Fig. 3 is a section taken on the line 3 3 of Fie. 1

Fig., 4 is a fragmentary sectional view taken on the line 4--4 of Fig.1;

Fig. 5 is a horizontal sectional view taken on the line 5*-5 of Fig. 1;l

Fig. 6 is a fragmentary view of the locking mechanism for the hopperlooking at the Asame from the end of the vehicle;

Fig. 7 is a development, in a plane of the cam member comprising aportion of the locking mechanism; v

Fig. 8 is a vsection taken on the line 8-8 of Fig. 1;

Fi 9`is a section taken `on the line 9-9 of Fig. 1; and

Fig. 10 is a view similar to Fig. 1 showing a slightly different form ofrocker and rail.

Referring in detail to the drawings7 the improved rear dump vehiclecomprises a frameworkf20 which is provided with the rear wheels 21mounted on the rear axle 22, which is driven by means of a suitabledriving connection 23, said framework being mounted on said axle bymeans of the springs 24 which are connected thereto by means of thepivoted levers 25, said springs 24 being connect/ed to the rear ,crossmember of the frame 20 by means of the U-bolts 27 and the plates 28. Thetransverse member 26 is secured in any desired manner to thelongitudinally extending members 29 ot the framework 20. Mounted on theframework 20 is a supplemental framework comprising the transversemembers 3() and 32 and tbc longitudinally extending members 33 and 34. Te members 30 are secured to the longitudinally extending members 2.() bymeans of the U-bolts 35 which extend through the flanges 36 ofmthe angleplates 37 secured to the members 30. At each cud ol the members 30'isprovided a downwardly extending bracket member 33 to which the forwardend portion of the longitudinally extending members 33 and 34 are se'ured. The rear transverse member 32 is secured to the longitudinallyextendingr members 29 of the framework 2O by means of the U- bolt-s' 40and Ais provided with brackets 41 extending downwardly therefrom atopposite ends thereof, the plates 42 being provided for bracing thesame.

upwardly bowed portions 44 of the side members 33 and 34 respectively.The side members 33 and 34 serve as runways or rails cally from loadcarrying to discharge position when illed and substantiallyautomatically from discharge position to load carry` ing position whenempty.

The hopper 45 is provided with a pair of rockers comprising theobliquely extending members 46 and the vertically extending members 47,said mem-bers being secured to the angles 4S which are secured to theunderside of the hopper 45. The vertically extending member 47 and theobliquely extending member 46 are connected by *the horizontallyextending portions 49. It will be seen that the flanges 50 of theportions A16 cooperate with the curved bearing surfaces 51 of theupwardly bowed portions 44 ot the side members 33 and 34 and that theflanges 512 of the horizontally extending portions 49 cooperate with thestraight flanges 53 of the side members 33 and 34 so that as the hopper45 is tilted toward the rear` as shown in dotted lines in Fig. 2, thesame will roll substantially automatically to the dotted line positionand the'in-` lined or oblique portions of the rockers will cooperatewith thc upwardly bowed portions of the rails or runways. the contactpoints between the rockers and thc rails moving first upwardly along thecurved portions of thc rails and then downwardly again to the rcar cndpori ions thereof. The curvature of thc rails and the angle of ktherochers is such that the center of `gravity of the load will lcconstantly lowered as the hopper moves toward dumping position. and thedirection ot' the t'orcc exerted b v the weight will be such that rlresame will be actingr Slightly in advance ci' the contact point betweenthe rockers and tbc rails at all times during thc dumping movement ofthe hopper. thus providing for automat ic. movement to dumpin; position.[hc vertically extcndingmemhcrs 47 ol' the rockcrs are connectedtogether bvincaos ol` thc transvcrscly cxtcndimql angle il so :is 1oprovide a transversely extending ln-accfor1hc rocher structure. Thestraight portions 52 of thc rocker members rest on thc strai'fhtportions :'l of the rails `or run- Secured to th'e` brackets 41 are theside members 43 of th'e' vfor the hopper 45 which is mounted thereon,and which is adapted to roll, automatithat the pin tween the forward endwall 56 and the angles 59 provided at the rear end of the side members54.

The plates 6 0 are provided for bracing the side boards'and aid inholding the same in position on top of the flanges 57. The angles 59 areprovided with brackets 61 hav; ing pairs of ears 62 which are perforatedto receive the pin 63 and which have a curved portion 64 connecting thesame, so as to provide pivots for the pivot pins 65 of the end gate 66.Pivotally mounted at 67 on-the angles 59 are the latches 68 which areadapted to cooperate with the pins 69 to lock the end gate 66 in closedposition. The pivot member 67 extends transversely from one side to theother of the body, and is provided with an arm 70 adapted to turntherewith which has an eye 71 on the end thereof for receiving the snaphooks 72 on the end of the chain 73, the other end of the chain 73 beingsecured to the angle 32 so that the end ate 66 will be automaticallyunlocked when t e hopper reaches its dumping position due to the factthat the distance between the oint of attachment 74 of the chain 73 to te member 32 to the eye 71 is increased as the hopper is dumped. Thechain can, of course,`be adjusted to opent-the end gate .at an desiredposition, but it is preferred that t e same opens when the hopper hasreached substantially the end of its rolling movement. The side boards58 are not used ordinarily when the hopper is used as a rolling dumpinghopper, but may of course be so used if necessary, The hopper is alsoadapted to be used as an express body at which time the sideboards 58are par# tieularly used. Vi/hen the body is used as an express body, itis desirable to open the end gate to the dotted position shown in Fig.1, and for this purpose a bracket- 75, which is similar to the bracket61, is provided, the pivot pins 69 pivoting between the side members orears of the bracket 75 when the end gate is to be open to the dottedline position, the customary chain 76 being provided for limiting themovement of the end gate. lt is, of course, to be understood 63 isremoved when this movement of the end gate 66 is desired. It is alsopreferred to unhook the snap hook 72 from the eye 71 when the endigateis dro yped to horizonta position so that,` the Patch 68 cannot beaccidentally unlocked. The latch 68 is normally held in locking positionby means of a coil spring 77 which extends around the shaft 67 and issecured thereto at one end thereof, and which has the. end portion 78engaging with the angle 79 on the hopper 45 for limiting the movementthereof in one direction.l

rlhe curved portions 44 of the side memnz: 33 and 34 are providedwithinclined Vslots 80 near the ends thereof forming hooks: 81 at the endsof the rails or runways, and the hopper 45 is provided-with a rod 84extrending between the members 46, said rod being adapted to cooperatewith the slots formlng sockets to ypermit pivoting of the hopperabout'tlie Vrod 84 when the same hasl reac ed the end of its rollingmovement to obtain complete dumping thereof when materials hard to dump,such as wet concrete. are used. -The rockers are provided withprojections 85 which are adapted to engage with o enings 86 in therunways to keep the .roc ers arid runways in proper relationshi to each,other.

l t. will be noted that the rolling surface of the runway is lower thanthe top surface. of the vehicle framework 20, and it will al- So benoted that if the runway were straight from the front to the rearthereof, the same Y could not be as low as is the runway with the curvedportions 47 this being due to.the fact that the springs 24 wouldinterfere with the runway if the same were straight and as -low asshown.

It will thus be seen by using the supplemental framework with thedropped side memhers,-a certain amount of lowering of the center ofgravity is obtained by making the rails or runways with curvedportions.`

lVhile in the drawings a type of truck is shown which has a transversespring which would interfere with the rail if straight` itwill beAobvious that in many other types 0f trucks other parts of the truckadjacent the wheels, such as the brake drums or springs of a differenttype, might interfere with the'placing of the railsl in the lowerlmostposition, and the upwardly bowed portions of the rails would be. ofyadvantage iu suchA a structure also. By using the-roeker and the curvedrail the body is located at no higher level than if a curved rocker andStraight rail were used and the additional advantage of being able tolower the rail without interference with the spring lis obtained.

Suitable means are provided for locking the. hopper in loadearryingposition, said means being shown as comprising a locking bolt 87which has the integral handle 88 ex- -t-endinoflaterally therefrom,YsaidY locking boltjbeing provided with a collar at 89 and a stop"pin atV9() between which the coil spring 91 is mounted. The spring 91 iscompressed between the member 89 and the member 90. The member 89abutting` against the cast-ing 92 and being free to slide on the member87, while the pin extends through the'bolts 87, the bolt 87 will beforced toward the right in Fig. 2 d'ue to the compression of the spring91. The pin 87 extends through an opening in the angle 30 and alsothrough an openlng 1n the depending b'racketmember 93 which' is securedto the, angle 94 mounted on the bottn'i vided with \a cani surfacehaving the pro# jeetingpor. ions 9T. the recedingportions 98 and theinteizoediate portiouslt).

It will be seen iliat as the handle -ii time the `same will be inengagement' with tl-.e receding portion 9S of the canrsiirface` toward ahorizontal position that the same.

will first engage-with the.'ino-lined'surfaces ltltl, and as thel handlerides along one of these surfaces the bolt'v 87 will be. withdrawn.After the same has passed over this surface the handle will engage withtho,portion V99 of the cani surface, which is made somewhat in the formof a socket., wherethesaine will rest in such a position. that the boltS willl be withdrawn from looking. position` the 'highest portions 97serving' as stops to limit'.

the movement of the handle.4

Means is also provided for preventing the upward movement ofthe hopperrelatiwetol the vehicle franiewm'k at the. rear end thereof, said meanscomprising the angles Si', secured to the members. :i9 b means of thebrackets SSS. said angles S2 engaging with the horizontally extendinglmember ltll which is se-tfured to the :ingle l1 in any desired manner.tending tiange. ,192 ot" thel angle 82 engages beneath the member ttll`the hopper will lie held from upward nio-rement. relative to the vehicleframework 20. The forward end of the hopper is provided with dependingbracket members 1023 at opposite sides thereof to which the angle 104isseciired, raid angle ltlly engaging \vitl1..tlie angle, El() when the.hopper is in load carrying osition tto support the saine at the forwar(end thereof.

Referring to Fig. 10, it will be. seen that instead of providing a railhaving an upwardly bowed portion ai d av rocker having a straightinclined surfacmthe rail members y 105 are provided which are straight'.Said rail mem'bers 105 are prbvided'witli openings ltlt similar to theopenings Sti in the rail members in the other form and having slots 107forming soeket members, and providing hook-like end portions ltlSonsaidrails. The rails form the longitudinally extending meinbers ol' aframework similar to that shown in Figs. l to 9 inclusive, the tornati!transverse member Il() of said frana-.work being shown in big. l0, saidframework -being yseein-ed. framework Qt of the vehicle by means of .\sthe liorizontallil ex rails.

provided with the brackets 38 to which the longitudinally extendingmembers 105 are The member 30 is secured tov the the U-bolts asdescribed in conneetionjo with Figs. l to 9. `The wheels 21, springs/ 24andi-ear axle-22 being designated by thel same numerals in Fig. 10 asinthe other `figures. The body` portion l5 having the end gate GG pivotedon the pivot member ('5 mounted in the brackets Glfand having .thelocking latch 08 operated by the chain 73 is made in precisely the samemanner as the body shown in Figs. 1 to 9 inclusive.

.the end gate being double acting due to turned from a verticalposition.- at whnfh.-

.providezl with a lever 88 cooperating with 85 the member 92 to lock thehopper in load eairving position in the same manner as the lever HH isoperated to lock the hopper 5.7 in load earrying position, Thelongitudinally extending members i8 on 'the 9U bod)J .415 'are providedwith rockers oom` prising the .horizontally extending portions [09secni'edtoethe members 48. the. vertieally extending portion and theareuate portion- 111. yThe rockers on opposite sides 95 of the body aresecured together yb v means ofthe angle memberl lll. The rockers areprovided witbti short straight portion at: ll merging with the arcuateport ion. lll` the portionsl ll'll of' the rockers eugagingf100 witht-lie rails or runways when the hopper is in load carrying position andthe curved portiont 1 ll engaging with the rails as the hopper rolls todumping position, The rockers are provided wilha rod 84 corre- 105spionding to the rod Nt ot' the I'orm shown in Figs. l to 9 inrlusive.Iwhich cooperates` with the socket .members` 10T to cause the hopper todump with a ylinal pivotal movement when desired. 'l.`heveurved rail lll110 is provided with 'projections llt lwhich are adapted to enter theopenings ltlt to hold the rockers in propel' relationship with the lnthis forni it will be seen that the bearing surfaces tlf of the rockerswill en- N5 gage with the rolling surfaces HG on the `rails alwaysatpoints below the top surface of the.' vehicle framework.

lt', will lle seen from the above thai. in both forms of the inventionthe runway for the li" rolling hopper is positioned below the topsurface of the vehicle framework upon whichA the .hopper is mounted` andthat, this is accomplished by providing a supplemoutal framework havingtransversely 12" extending supportingmembers and underslung or depressedlongitudinally extending members, said members depending from bracketsprovided on the cross members.

It is desirable to obtain as long a, roll for the hopper as possible, asthe center of gravity on the hopper can tlfen be placed further forwardrelative to which better distributes the load on the wheels of theVehicle. W'hcrc, a short roll is provided, the ccntcr of gravity canmore lengthwise only a small distance, whereas where a longer roll isprovided, a much reater movement will result. Accordingly if desired, arocker can be used with a longer rolling surface without raising thecenter of gravity undesirably with the present construct-ion, or thecenter of gravity can be lowered as muc-h as the bearing surface of therail is lowered below that which it would have-if placedIl on top of theframework of the vehicle, if this is preferred. In other words, thecenter of gravity can be both lowered and moved forwardly when thehopper is in loadfcarrying position due to this construction, or can beeither lowered or moved forwardly as desired. Either form of rail androcker construction can be used but preferably the form with theupwardly bowed portion is used to obtain a maximum lowering of therolling surface.

It will be noted that a very low loading edge can be obtained by thisarrangement. In an actual construction, the loadingedge of the hopper ispositioned substantially 48 inches above the rolling surface for thewheels of the vehicle.

Having thus described our invention,

what we-desire to claim and secure by Il. S. Letters Patent is:

l. In a vehicle, a vehicle framework, ay rear axle, a supplementalframework mounted on said vehicle framework, said supplemental frameworkcomprising a longitudinally extending runway depressed below the top ofsaid vehicle framework and extending over said rear axle.

2. In a Vehiclc, a vchiclcl framework, a, rear axle, said frameworkhaving a fixed cross member adjacent. the rear axle, a. Supplemental.framcwork mounted on said Ve'- hicle framework. saidsupplemental frame work comprising a longitiulinally extending runwaydcprcssed bclow thc top of said vc.- hicle framework and mtcnding oversaid rear axle and rearwardly beyond the same.

3. A dcvicc of the character described comprising a vehiclcI framework,carrying said framework and a runway mounted on said framework below thclop surl'accl of said flamework, said runway having a portion cxtcndiugbctwcen/ said ubc-"ls and said framcwork.

4. In a device of the character described, a vehicle framework, and asupplemental framcwork mounted on said vchiclc framework comprising thetransversely extending members resting on said vehicle framcwork andlongitudinally/cxtending members havthe rear axll" wheels and depresseding upwardly bowed portions ,depending from said transversely extendingmembers. 1 `v5. In a device. ofrthe. character described, La vehicleframework, a dumping body, and a longitudinally extending runway onwhich said body is adapted to roll to dumping position, said runwayhaving a straight portion and an upwardly bowed portion and beingdepressedrbelow the top surfaeeof said framework, and said body having arocker cooperating with said runway. 6. In a device of the characterdescribed, a vehicle framework, a dumping body and a runway on whichsaid body is adapted to roll to dumping position, said run-v way havingan upwardly bowed portion and a straight portion and being depressedbelow the top surface of said framework, and said ,body having a rockercooperating with said runway, said rocker having a straight inclinedface coopera-ting with said bowed portion and a face engaging saidstraight portion.

7. A device of the character described comprising a vehicle framework, asupple mental framework comprising longitudinally extending railsmounted thereon, said rails having upwardly bowed portions and beingdepressed below the top surface of said framework, and a dumping bodyhaving rockers thereon engaging with said rails, said rockers havinginclined faces cooperating with the upwardly bowed 'portions of saidrails and straightl portions resting on straight portions of said railswhen said body is in load carrying position.'

S. In a dcvicc of thc character described, a vehicle framework. a rearaxle, and a runvf'ay on said framework having an upwardly bowcd portionsubstantially concentric with said axle, saidrunway being depressedbelow the top surface of said fra mcwork.

9. In a dcricc of thc character described. a vehicle frana-work. adumping body` and a runway on which said Vbodv is adapted to roll todumping position. said runway being depressed below thc top surface ofsaid framework. said body and framework having means for holding saidbody fron.) upward morcmcnt relative to said gf'uamcworlr at the rcarend thcrcof. said means ^Acomprising flanges on said body engaging withcooperating brackets on said runway.

l0. In a device of the character described, ay vchicle framework. a rearaxle, wheels thcrcon. and a runway on said framework having an upwardlybowed .portion substantially concentric with said axle, said runwaybeing dcprcssed below the top surfacc of said framework and extendingbel2 twecn said framcwork and said wheels.

l1. In a device of the character described, a vehicle framework, a rearaxle, and a supplemental framework mountedonl said vehicle frameworkcomprising transversely extending members resting on said vehicleframework and lo itudinally extending members depending rom saidtransversely extending members and depressed below the sume, saidlongitudinally extending members extending over and rearwardly beyondsaid rear axle and constituting a runway.

12. In a vehicle, a framework, a rear axle In witness whereof, wehereunto subscribe l5 our names this ith day of February A. D., 1922.

ALBERT P. LEE. MAGNUS C. ANDERSON.

